The influences of precooling methods on the respiration intensity, formation of ethene and the quality of 'Fraiar' and 'Angeleno' plum fruit were investigated.

以'黑寶石'和'安哥諾'李果實(shí)為試驗(yàn)材料真实国产乱子伦视频在线播放，研究了冰水和風(fēng)預(yù)冷對(duì)李果實(shí)呼吸強(qiáng)度、乙烯生成量及其貯藏品質(zhì)變化的影響亚洲一区欧美日韩字幕。

So there is a need to study the key technologiesand processes in the vacuum precooling unit and to provide the theoretical basis forthe design and application of vacuum precooling unit.

因此日本特级黄色一区二区三区，迫切需要對(duì)真空預(yù)冷裝置中的關(guān)鍵技術(shù)和預(yù)冷工藝進(jìn)行研究免费国产乱伦不卡，為真空預(yù)冷裝置的設(shè)計(jì)和使用提供理論依據(jù)无码AV无码AV毛片毛。

The precooling operation of propylene jar at low temperature was studied in detail and the rational method of the precooling operation was advanced.

對(duì)低溫丙烯罐的預(yù)冷工藝進(jìn)行了較為仔細(xì)深入的研究，提出了較為科學(xué)亚洲日韩第三四页、合理的預(yù)冷操作方法国产偷出轨精品免费视频，確保了丙烯貯罐內(nèi)罐基本維持每小時(shí)溫降1℃。

Compared to ice precooling, water precooling and vacuum precooling,the advantages of pressure-difference precooling were introduced.

介紹了壓差預(yù)冷技術(shù)相對(duì)于冰預(yù)冷av黄片国内、水預(yù)冷以及真空預(yù)冷的優(yōu)點(diǎn)欧美A级拍拍拍高潮喷水，綜述了壓差預(yù)冷技術(shù)在國(guó)內(nèi)外的研究現(xiàn)狀，同時(shí)指出目前壓差預(yù)冷技術(shù)中存在的問(wèn)題www…爱爱…com，預(yù)測(cè)今后的發(fā)展前景能直接看的黄色视频网址。

The paper analyses precooling process of LNG Carriers tank and brings forward mathematic models of precooling process and precooling theory rule.

本文對(duì)LNG船液貨艙的預(yù)冷過(guò)程進(jìn)行分析，提出預(yù)冷過(guò)程的數(shù)學(xué)模型综合网图片亚洲小说，由此得出預(yù)冷理論規(guī)律WWWW黄色精品在线。

Any preheating and precooling increases the chamber charging pressure before TDC, and this is mechanically counter- productive for the piston (gas chamber loading requires less mechanical energy in the absence of preheating and precooling, which makes the regenerator less effective than one may think).

任何預(yù)熱和預(yù)冷室收費(fèi)增加了貿(mào)發(fā)局的壓力面前，這是機(jī)械計(jì)數(shù)器加載生產(chǎn)的活塞（氣室需要一個(gè)可能覺(jué)得少的機(jī)械比能量的情況下預(yù)熱和預(yù)冷91POPNY九色老熟女，這使得再生效果較差）99久久国产精品国产毛片。

The results show that the precooling time of the probe is shortened significantly with the help of the vapor liquid separator, and decreases with the driven pressure. With the helical coiled wire and the helical mesh, significant thermal Oscillation corresponding the density-wave is observed in the precooling time. The average heat transfer coefficient enhances 1.5 times with the mentioned heat transfer enhancement techniques, and the temperature of the 2.5 min cryoprobe surface can reach -160℃ in 17℃ brine within 10 min.

結(jié)果表明：使用了快速預(yù)冷汽液分離器后，探針預(yù)冷時(shí)間大大縮短亚洲A级黄片，并隨驅(qū)動(dòng)壓力增大而減行詇视频。患尤肼菪z和螺旋絲網(wǎng)后久久天堂网色综合综合色，在預(yù)冷階段出現(xiàn)明顯的熱力振蕩欧美最婬乱婬爆婬性视频真人爆婬，并伴有密度波振蕩，平均換熱系數(shù)為原來(lái)的1.5倍模特无码日韩视频下载，在17℃生理鹽水中10min時(shí)2.5min探針表面溫度最低可達(dá)－160℃曰本人一级毛片免费看www，大大提高了探針的冷卻性能。

The dissertation presents somecontents about the vacuum precooling as follows: 1. Studies on the evaporation cooling principles of fruit and vegetable There are different optimal storing conditions for different vegetables and fruits.And the vegetable and fruit precooled by vacuum must be fit with the storingcondition. A low temperature will result in the frozen scald, and a high temperaturewill not meet the precooling objective.

本文開(kāi)展了以下幾個(gè)主要方面內(nèi)容的研究：1在线免费观看黄色开车视频高清、果蔬蒸發(fā)冷卻規(guī)律的研究不同果蔬都有各自不同的最佳儲(chǔ)藏條件黄片免费看国产片美国，因此，真空冷卻后的果蔬必須滿足儲(chǔ)藏要求操美女视频导航，溫度過(guò)低易引起果蔬凍傷在线看片91，過(guò)高則達(dá)不到預(yù)冷的目的性色av又粗又长又黄；濕度過(guò)低易引起干耗，減輕重量美女被狂cao；過(guò)高則易引起腐爛變質(zhì)青草精品视频在线观看。

The results showed that wind precooling could inhibit the respiration intensity of plum fruit, while the two precooling methods had little effect on the formation of ethene. The firmness and soluble solid content decreased on storage. The precooling methods had little effect on the firmness of fruit, but wind precooling could relieve the decrease of to a certian extent. The two varieties of plum fruit both became rotten in the late period of storage, the rot with ice precooling was higher than wind.

結(jié)果表明，風(fēng)預(yù)冷可抑制'黑寶石'和'安哥諾'李果實(shí)的呼吸速率国产麻豆视屏，但這2種預(yù)冷方式對(duì)果實(shí)乙烯釋放量的影響不明顯被操好爽视频；隨著貯藏時(shí)間的延長(zhǎng)，'黑寶石'和'安哥諾'李果實(shí)的硬度和SSC含量均下降久久免费影院，這2種預(yù)冷方式汁果實(shí)硬度的影響不大毛片毛片一级毛片，但風(fēng)預(yù)冷可在一定程度上緩解果實(shí)SSC含量的下降；在貯藏后期黄色免费a片短视频，2品種李果實(shí)均表現(xiàn)出腐爛癥狀jizzjizz18，冰水預(yù)冷果實(shí)的腐爛癥狀明顯高于風(fēng)預(yù)冷。

The results showed that wind precooling could inhibit the respiration intensity of plum fruit, while the two precooling methods had little effect on the formation of ethene. The firmness and soluble solid content decreased on storage. The precooling methods had little effect on the firmness of fruit, but wind precooling could relieve the decrease ofto a certian extent. The two varieties of plum fruit both became rotten in the late period of storage, the rot with ice precooling was higher than wind.

結(jié)果表明欧洲激情一区二区三区视频，風(fēng)預(yù)冷可抑制'黑寶石'和'安哥諾'李果實(shí)的呼吸速率欧美成色色色，但這2種預(yù)冷方式對(duì)果實(shí)乙烯釋放量的影響不明顯；隨著貯藏時(shí)間的延長(zhǎng)中文字幕网第一页，'黑寶石'和'安哥諾'李果實(shí)的硬度和SSC含量均下降无码专区影音先锋在线观看，這2種預(yù)冷方式對(duì)果實(shí)硬度的影響不大，但風(fēng)預(yù)冷可在一定程度上緩解果實(shí)SSC含量的下降中文字幕日韩精品视频一区；在貯藏后期免费国产黄色网址，2品種李果實(shí)均表現(xiàn)出腐爛癥狀，冰水預(yù)冷果實(shí)的腐爛癥狀明顯高于風(fēng)預(yù)冷看久久久黄色精品视频。